Improvement in window-sash stops



i TO LL vWHOM IT MAY CONCERN: A l e @einstellen gamut @frn Letters .Patent No. 74,324, dated February 141, 1868.

IMPROVEMENT In wINDowlsAlsH srors.

fitte v,stimmte referrer is in tigen Enfers atmt mn making-tart utiliz sans.

`:Be it known that I, ANTHONY R. DYE'l-"r, of the city, county, and State of New-York, have invented a new and improved Adjustable Lock for Car and other Windows, te.; and I do herebydeclare that the following 'is a full, clear, and exact description thereof, which will enable others'skilled in the art toxmake and use the saine,

reference being had to the accompanying drawings, forminga part of this speciiication.-

4 This invention relates toon improved adjustable lock for car and other windows, and is' applicable to` sliding Y Ishutters and similarguillo'tne arrangements. Y l i ,v l l It consists of two bolts, cnnected by toggle-levers, pirated at their' extremitiesfandrdisposed on lthe lower' bar or other appropriate poi-tion of the guillotine-*sash onshntter'. The bolts Iset into arsch in, the windowframe, thereby holding the'sash or shutter in any desired position. The bolts are held to their places in' the rack by means of two wedges, which t in the angles formed by the connection'ovf the toggle-levers to Yeach other; the wedges being held home to the angles by a spring fastened to them. The springmight, however, 4 b e placed`laterally, and the wedges tit into the 'side angles, or the wedges may be replaced by a barrer plate. i

To shoot back the bolts,v the spring is compressed, when, the wedges being drawn towards eachrotherepringg# acting on the outside of eachvarm of the toggle-levers, press them together, drawing the bolts attached to their joints on'tof the racks. .In the accompanying drawings- F'gfnre 1 represents a front view of s guillotine-sash having my improved 'adjustable lool: attached onithe. i vfront part of the lower Abnr thereof, the t'op plate removed in order to sxhibitthede'toils of my'nventon.

Figure 2 is n detail v iew of the'working parte of my invention. `Similar letters ofreference indicate corresponding parts. p Y y. A A is the window-frame, and B the sash, andin the present instance the lock is disposed in front of the lowerbar of sa'id sash, but it may be placed on the ripper. ber, or concealed within the timber, and in practice 'it is desirable -that the working parts of my lock shonldv be disposed within the sash or otherwise protected, as

by a` plate or coverover the same. C C are two bolts, pivoted .to the toggle-levers D D' et gi d,`and which, f shootingy into the racks H H', attached to or ountersnnk in the bead or side of the frame, hold the sash'in any desired position. Whenthe lockV is ydisposed outside the frame, it will be necessary to provide guides c c for the bolts C C", but when the fastening is disposedwithin'the timberl of the sash, as the bolts will be confined by the grooves in which they run, the gknides cc may be dispensed with. The togglelevers D D are connectedA i ,together at d" and dl, and are kept extended by the wedges E E, which are kept apart and held to'the angles 'df' and d' bythe spring F, which is of snicient power to overcome the outside springs .l J.i It is desirable that the first-mentioned spring, which may be in 'one or two pieces, should be held allient the middle, so as to operate with equal force on both ends of the levers, and in the present instance this is eli'ected by a plate,

iix ed ti'the -top'plte G, andwhich passes into and holdsv the spring. It is not, however, esse'ntialfso to hold i the spring F. i The sash being held in any 'position by the bolts C C', which secure inthe racks H H', to oper.

ate the same, sol as to-open or close the sash, the thumb-pieces e e are pressed together, when the-wedges EE compress the spring F, and leaving .the angles d and d, enable the springs J J to operate on the levers d d',

and withdraw the bolts from the racks H H. 'When the sash has reached its desired position, simply releasing the thumb-pieces e e enables the spring F t'o dri'o the wedges into the angles, shooting the boltsint'o the rack, and holding the sash, as desired. In the present instance the racks H'Hdmye 'an upward slope, and the bolts C IC are bev'elled at their free ends,'so that the sash may-be raised, without operating the spring, by simply pressing n'pwards,vbut it is readily seen that the rack and bolts may be so constructed (as by making the ends `of the bolts C C and the rack-teeth square.) as to hold.the sash from being raised, as well as from' falling,

except by operating 'the springs, thus preventing a window or shutter towhichmylock isattached from being opened from the outside.

By the use of this lock the sash isV held evenly, and'prevente'd from j amming, as happens with allfasteners which are applied only to one side. The sash also may beinserted so loosely in the frame that no swelling in wet weather` shall make it jam, and so that itziiay be easily and readily raised, whilecords, pulleys, and

balance-weights, continual sources of annoyance 4and expense in guillotine-windows and shutters, are entirely dispensed with.

Having thus described my invention, what Iv claim as new, nd'desire tosecmte by Letters Patent, are- 1. The bolts C C', in combination with the toggle-levers D D', substgxntially as und for'the purposes'S-pcciel.

2. The said toggle-levers, in combination with the wedges EE, ou their equivalents, substantially as und for the purposes -above described.

3. The saidtoggle-levers, in combination with the-springsJ J', substantially :is described; The above; speeication of my invention signed by me, this nineteenth day of November, 1867.

A. It. DYETT.

Witnessem i Jos.. P. FALLoN, V M. RIOHARD SEvEnoN. 

